18908617

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{4421}}^1$

素因数の和:4488

約数の個数: 16

約数和(自身を含む): 23772672

約数和(自身を除く): 4864055

約数列:

[1, 7, 13, 47, 91, 329, 611, 4277, 4421, 30947, 57473, 207787, 402311, 1454509, 2701231, 18908617]

約数ペア:

[(1, 18908617), (7, 2701231), (13, 1454509), (47, 402311), (91, 207787), (329, 57473), (611, 30947), (4277, 4421)]